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The time now is Fri 06 Dec 2019, 21:53
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 Forum index » Taking the Puppy out for a walk » Announcements
New RaspberryPI - 4
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Lobster
Official Crustacean


Joined: 04 May 2005
Posts: 15550
Location: Paradox Realm

PostPosted: Sun 14 Jul 2019, 02:55    Post subject:  

Sage wrote:
Never liked the mini USB power-in sockets, nor the USB-C (for any purpose), nor brick-chargers, generally - for any purpose. Experience tells they can be unreliable and short-lived (where's the fan cooling?!). Input power from a proper PSU, either via the GPIO (note previous precautions) or a proper power input socket, notwithstanding some ancillary protection devices, resistive or active the better option.
Although, no excuse for designers not reading the full spec!


Came across this test of cables @Sage which might be of interest ... Cool
https://www.tomshardware.com/news/raspberry-pi-4-usb-c-cables-that-work,39869.html

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Sage

Joined: 04 Oct 2005
Posts: 5501
Location: GB

PostPosted: Sun 14 Jul 2019, 14:50    Post subject:  

No! No! It's only a tiny board. Making the cable bigger and heavier will only put the same unacceptable force as a smaller, thinner cable into a smaller socket, which at least has a latching action. There'll always be someone wanting to sell another socket/another cable. Time to call a halt. The little board is just too flimsy to take more strain so the answer has to be to hard wired power either via the GPIO with suitable conductor/plugs or mount a regular dc socket off-board on your strip of melamine kitchen worktop! This has to be the smart option - it's incredibly easy to peel those tiny conducting lines off the mainboard with the slightest twist or pull/push. Not sure the purpose built plastic case provides much strain-relief, but a home-built metal one might be OK and provide some shielding.
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peterw

Joined: 19 Jul 2006
Posts: 376
Location: UK

PostPosted: Mon 15 Jul 2019, 03:08    Post subject: Connecting Power to Raspberry Pi  

When I got one of the original Raspberry Pi's I had trouble getting power to it. The supply was OK but there was too much resistance at the connector. It led to unreliable operation. So I striped one end of a USB cable and soldered the power supply wires to two pins on the underside of the GPIO connector. Then secured the cable by tying it down so that there was no strain on the connections and it looked neat. It always worked after that.
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Sage

Joined: 04 Oct 2005
Posts: 5501
Location: GB

PostPosted: Mon 15 Jul 2019, 03:17    Post subject:  

Smart move, pw. Soldering iron always provides an ultimate solution!
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